diff --git a/modules/soundtrigger/Android.mk b/modules/soundtrigger/Android.mk
index bb58053..8250f9b 100644
--- a/modules/soundtrigger/Android.mk
+++ b/modules/soundtrigger/Android.mk
@@ -19,6 +19,7 @@
 
 LOCAL_MODULE := sound_trigger.stub.default
 LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
 LOCAL_SRC_FILES := sound_trigger_hw.c
 LOCAL_SHARED_LIBRARIES := liblog libcutils
 LOCAL_MODULE_TAGS := optional